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<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>
<body>
  <script src="../node_modules/@vue/reactivity/dist/reactivity.global.js"></script>
  <script>
    let  { reactive,shallowReactive,readonly,shallowReadonly }  = VueReactivtiy;
    let state = readonly ({
      name:"三笠",
      age:{
        type:"年龄",
        num:100
      }
    })
    state.age.type="123";
  </script>
</body>
</html>